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Installation Method 

the thermaQ Midi electric water heater can be used for hand washing or 

cleaning in a kitchen, etc. and it can be installed above or under the sink.  

INstallINg the uNIt

Using the brackets and mountings provided please mount your unit on the wall, please take 
into account the following points when choosing where to mount your water heater.

1.  The wall must be strong enough to take the weight of not just the water heater, but  
 

the water it holds as well, wherever possible we would recommend securing onto    

 

an external brick wall 

fig. 2

.

2.  The unit should be located in a position as close to the outlets as possible, this  

 

 

reduces the amount of pipework between the heater and the outlet thus reducing    

 

heat loss across the pipework..   

3.  Ensure the water heater is in the correct orientation, the oversink model should  

 

 

always have the connections at the bottom of the unit and the undersink module    

 

should always have the connections on the top of the unit 

fig. 1

Fig 2.

 Fixing unit to an external brick wall.

System 3

Incoming Cold Mains 5 Bar Or Above.

Additional Equipment Required:

2L Portable Expansion Vessel

Check Valve

Pressure Reducing Valve

HEATER

Expansion Vessel

Check V

alv

e

Closest Cold

Draw Off

Pressure

Reducing

Set

Service Valve

(Not Supplied)

Discharge To Drain

Pressure  Relief V

alv

e

System 2

Pressure Relief Closer Than Required (See System 1).

Additional Equipment Required:

2L Portable Expansion Vessel

Check Valve

HEATER

Expansion Vessel

Check V

alv

e

Closest Cold

Draw Off

Service Valve

(Not Supplied)

Discharge To Drain

Pressure  Relief V

alv

e

No Additional Equipment Required

HEATER

Closest Cold

Draw Off

Service Valve

(Not Supplied)

Pressure  Relief V

alv

e

Discharge To Drain

Minimum Distance Required

A

 

To Pressure Relief for Expansion:

6L Unit - 1.85m
10L Unit - 2.80m
15L Unit - 4.20M

System 1

Incoming Cold Mains Below 5 Bar.

62mm

External
Brick Wall
Recommended

Fig 3.

 System requirements.

Excellence in Hot Water Technology.

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ThermaQ Specification Hotline 01924 270847

Summary of Contents for MIDI

Page 1: ... 9ND t 01924 270847 f 01924 271310 sales ThermaQ co uk www ThermaQ co uk EXCELLENCE IN HOT WATER TECHNOLOGY ThermaQ endeavour to keep the content of this brochure as up to date as possible We reserve the right to make changes to all ThermaQ products and services at anytime To ensure you have the most current information please contact ThermaQ directly Follow us on twitter ThermaQ EXCELLENCE IN HOT...

Page 2: ...duced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Children should be supervised to ensure that they do not play with the appliance 7 This appliance MUST be permanently connected to the fixed circuit breaker and it must be installed vertical...

Page 3: ...e mains power supply incoming water pressure and the grounding conditions are adequate and the ammeter and wire are at the correct standard required for installation 3 The appliance must be properly grounded due to the dedicated branch circuits of high voltage within the unit Ground wires must be brought to the ground at the circuit breaker panel 4 This appliance MUST be permanently connected to t...

Page 4: ...ersink module should always have the connections on the top of the unit Fig 1 Fig 2 Fixing unit to an external brick wall System 3 Incoming Cold Mains 5 Bar Or Above Additional Equipment Required 2L Portable Expansion Vessel Check Valve Pressure Reducing Valve HEATER Expansion Vessel Check Valve Closest Cold Draw Off Pressure Reducing Set Service Valve Not Supplied Discharge To Drain Pressure Reli...

Page 5: ... isolated the electricity supply Plumbing Your new water heater s connections are 1 2 BSP fittings and these connections are clearly marked on the unit It is important that these two connections are not swapped over The connection from the heater to the system pipework should be made using flexible stainless steel hoses this facilitates the operation of the unit and also makes future maintenance e...

Page 6: ...uble Shooting Excellence in Hot Water Technology 10 11 ThermaQ Specification Hotline 01924 270847 Problems Possible Causes Corrective Actions The pressure release valve is constantly discharging or dripping The incoming cold mains pressure is to high Please fit pressure reducing set in line with system 3 The pressure release valve drips or discharges whilst the unit is heating up There is insuffic...

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